Re-sync adapter?

[headlesshobbs]

I'm just confused that we have to have so many options for sync and so many displays/devices are fussy on which format they receive. I mean instead of having to resort to buying an extron, couldn't anyone come up with a gadget that takes any form of sync and converts it to any type on output to solve this problem?

A nice $20-30 option would be a good range.

[DirkSwizzler]

I'm just confused that we have to have so many options for sync and so many displays/devices are fussy on which format they receive. I mean instead of having to resort to buying an extron, couldn't anyone come up with a gadget that takes any form of sync and converts it to any type on output to solve this problem?

A nice $20-30 option would be a good range.

Are there devices that reject csync? Because there are plenty of devices with LM1881 chips in them to take sync on composite or sync on luma and turn it into csync.

Or there's the newer gscartsw's that regenerate it as csync.

The other sync formats are just things mixed in with sync because it makes sense from non-rgb angles.

I'm not even sure what would make the most sense for turning csync into sync on composite. Maybe mix in a standard display pattern somehow?

Is csync equivalent to black luma?

[headlesshobbs]

I know very little about black luma, but I've heard the term before. Isn't that a digital format?

Anyways when I talk about re-sync, the idea is about taking the source and allowing it to process to any form when output to a display. Changing the format would be done by switch, so that would be a great thing to help with people who have a number of cables with different types of sync formats, or changing up the displays you use (like devices that all of a sudden require "clean" sync)

I know we have another device out there which I think is called Sync Strike, but that's likely one format and outputs vga only.

[ASDR]

What kind of devices / displays are fussy with sync? I've never seen a SCART TV that cares about sync-on-composite vs sync-on-luma vs csync. I have a dozen plus consoles hooked up to the OSSC with all kind of sync types (csync SFC, SoC GC, SoL PS1, etc.) and never had to adjust a single setting. The only device I've ever seen that didn't just work was the broken video out on the SSDS3. And of course there are plenty of settings to adjust should you have one of those wildly out of spec consoles like certain NeoGeo models reportedly are. The FM also has received various sync related improvements in software updates and also has sync filtering / threshold settings from what I understand. So I'm not sure what the problem is. The main compatibility issue I can think of are timing / refresh rate related issues causing tearing / streaks / no-signal and fixing that requires a full video processor with a framebuffer (i.e. FM). Adding random sync strippers or additional low-pass filters will likely cause more issues than it fixes. The gScart has a sync regeneration feature that supposedly is better and does not cause any lag/shift like the LM1881 supposedly does, but even there I'm not sure what the benefit is and heard sporadic reports of things working worse after it has been turned on.

[nmalinoski]

The way this reads to me is an RGB interface, like the Extron 201/202/203 rxi, that would also accept composite video and luma as sync, instead of requiring clean composite sync like the Extrons do.

If you want to take it a step further, put it in a box with modular input and output ports. You could create I/O modules consisting of the desired port (SCART, BNC, DE-15, RCA) mounted to a PCB with pogo pins on the bottom; slide it in and secure it (with case lid, screws, whatever). Since it's a PCB, you could also include additional circuitry to accommodate different scenarios, such as fitting the DE-15 module with a level booster to provide the proper TTL sync.

Should also be possible to design the modules to be bidirectional. For example, assuming that the main board requires 75Ohm on both input and output, on the DE-15 module, two pogo pins could be linked to the horizontal sync pin--one pin goes to a resistor, which would only be connected when installed on the input side to bring TTL levels down to 75Ohm; while the other would go to the level booster, which would only be connected when installed on the output side.

[BuckoA51]

What kind of devices / displays are fussy with sync? I've never seen a SCART TV that cares about sync-on-composite vs sync-on-luma vs csync.

I've encountered one (cheap old CRT) that didn't work with csync, but it was back in the old days before people were really aware of the TTL vs 75ohm thing so it could have worked if it was properly attenuated.